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- Partly Implement KsCacheMedium
- Implement KsHandleSizedListQuery - Remove KsGetChildCreateParameter, it is not exported in NT 5.1 KS svn path=/trunk/; revision=42303
This commit is contained in:
Johannes Anderwald
parent
974e0eca7e
commit
cd03260db2
3 changed files with 127 additions and 25 deletions
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@ -9,6 +9,9 @@
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#include "priv.h"
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const GUID GUID_NULL = {0x00000000L, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}};
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const GUID KSMEDIUMSETID_Standard = {0x4747B320L, 0x62CE, 0x11CF, {0xA5, 0xD6, 0x28, 0xDB, 0x04, 0xC1, 0x00, 0x00}};
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/*
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@implemented
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*/
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@ -1163,7 +1166,7 @@ KsSynchronousIoControlDevice(
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}
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/*
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@implemented
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@unimplemented
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*/
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KSDDKAPI
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NTSTATUS
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@ -1179,7 +1182,7 @@ KsUnserializeObjectPropertiesFromRegistry(
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/*
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@unimplemented
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@implemented
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*/
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KSDDKAPI
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NTSTATUS
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@ -1189,8 +1192,83 @@ KsCacheMedium(
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IN PKSPIN_MEDIUM Medium,
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IN ULONG PinDirection)
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{
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UNIMPLEMENTED;
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return STATUS_UNSUCCESSFUL;
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HANDLE hKey;
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UNICODE_STRING Path;
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UNICODE_STRING BasePath = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\Control\\MediumCache\\");
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UNICODE_STRING GuidString;
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NTSTATUS Status;
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OBJECT_ATTRIBUTES ObjectAttributes;
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BOOLEAN PathAdjusted = FALSE;
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ULONG Value = 0;
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/* first check if the medium is standard */
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if (IsEqualGUIDAligned(&KSMEDIUMSETID_Standard, &Medium->Set) ||
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IsEqualGUIDAligned(&GUID_NULL, &Medium->Set))
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{
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/* no need to cache that */
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return STATUS_SUCCESS;
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}
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/* convert guid to string */
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Status = RtlStringFromGUID(&Medium->Set, &GuidString);
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if (!NT_SUCCESS(Status))
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return Status;
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/* allocate path buffer */
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Path.Length = 0;
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Path.MaximumLength = BasePath.MaximumLength + GuidString.MaximumLength + 10 * sizeof(WCHAR);
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Path.Buffer = AllocateItem(PagedPool, Path.MaximumLength);
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if (!Path.Buffer)
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{
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/* not enough resources */
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RtlFreeUnicodeString(&GuidString);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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RtlAppendUnicodeStringToString(&Path, &BasePath);
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RtlAppendUnicodeStringToString(&Path, &GuidString);
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RtlAppendUnicodeToString(&Path, L"-");
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/* FIXME append real instance id */
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RtlAppendUnicodeToString(&Path, L"0");
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RtlAppendUnicodeToString(&Path, L"-");
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/* FIXME append real instance id */
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RtlAppendUnicodeToString(&Path, L"0");
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/* free guid string */
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RtlFreeUnicodeString(&GuidString);
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/* initialize object attributes */
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InitializeObjectAttributes(&ObjectAttributes, &Path, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, NULL, NULL);
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/* create the key */
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Status = ZwCreateKey(&hKey, GENERIC_WRITE, &ObjectAttributes, 0, NULL, 0, NULL);
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/* free path buffer */
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FreeItem(Path.Buffer);
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if (NT_SUCCESS(Status))
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{
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/* store symbolic link */
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if (SymbolicLink->Buffer[1] == L'?' && SymbolicLink->Buffer[2] == L'?')
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{
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/* replace kernel path with user mode path */
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SymbolicLink->Buffer[1] = L'\\';
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PathAdjusted = TRUE;
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}
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/* store the key */
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Status = ZwSetValueKey(hKey, SymbolicLink, 0, REG_DWORD, &Value, sizeof(ULONG));
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if (PathAdjusted)
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{
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/* restore kernel path */
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SymbolicLink->Buffer[1] = L'?';
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}
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ZwClose(hKey);
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}
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/* done */
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return Status;
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}
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/*
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@ -402,34 +402,42 @@ KsPinDataIntersection(
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ULONG Index;
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NTSTATUS Status;
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/* get current irp stack location */
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IoStack = IoGetCurrentIrpStackLocation(Irp);
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/* calculate minimum data size */
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Size = sizeof(KSP_PIN) + sizeof(KSMULTIPLE_ITEM) + sizeof(KSDATARANGE);
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if (IoStack->Parameters.DeviceIoControl.InputBufferLength < Size)
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{
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Irp->IoStatus.Information = 0;
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Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
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/* buffer too small */
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Irp->IoStatus.Information = Size;
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Irp->IoStatus.Status = STATUS_BUFFER_TOO_SMALL;
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return STATUS_BUFFER_TOO_SMALL;
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}
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/* is pin id out of bounds */
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if (Pin->PinId >= DescriptorsCount)
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{
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/* it is */
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Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
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Irp->IoStatus.Information = 0;
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return STATUS_INVALID_PARAMETER;
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}
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/* get start item */
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Item = (KSMULTIPLE_ITEM*)IoStack->Parameters.DeviceIoControl.Type3InputBuffer;
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/* get first data range */
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DataRange = (KSDATARANGE*)(Item + 1);
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/* iterate through all data ranges */
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for(Index = 0; Index < Item->Count; Index++, DataRange++)
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{
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/* call intersect handler */
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Status = IntersectHandler(Irp, Pin, DataRange, Data);
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if (NT_SUCCESS(Status))
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{
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if (IoStack->Parameters.DeviceIoControl.OutputBufferLength < sizeof(KSDATARANGE))
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if (IoStack->Parameters.DeviceIoControl.OutputBufferLength < DataRange->FormatSize)
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{
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Irp->IoStatus.Information = sizeof(KSDATARANGE);
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/* buffer is too small */
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Irp->IoStatus.Information = DataRange->FormatSize;
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Irp->IoStatus.Status = STATUS_BUFFER_TOO_SMALL;
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return STATUS_BUFFER_TOO_SMALL;
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}
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@ -447,7 +455,7 @@ KsPinDataIntersection(
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}
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/*
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@unimplemented
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@implemented
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*/
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KSDDKAPI
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@ -459,5 +467,35 @@ KsHandleSizedListQuery(
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IN ULONG DataItemSize,
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IN const VOID* DataItems)
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{
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ULONG Size;
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PIO_STACK_LOCATION IoStack;
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PKSMULTIPLE_ITEM Item;
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/* get current irp stack location */
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IoStack = IoGetCurrentIrpStackLocation(Irp);
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Size = DataItemSize * DataItemsCount + sizeof(KSMULTIPLE_ITEM);
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if (IoStack->Parameters.DeviceIoControl.InputBufferLength < Size)
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{
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/* buffer too small */
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Irp->IoStatus.Status = STATUS_BUFFER_TOO_SMALL;
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Irp->IoStatus.Information = Size;
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return STATUS_BUFFER_TOO_SMALL;
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}
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/* get multiple item */
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Item = (PKSMULTIPLE_ITEM)IoStack->Parameters.DeviceIoControl.Type3InputBuffer;
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Item->Count = DataItemsCount;
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Item->Size = DataItemSize;
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/* copy items */
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RtlMoveMemory((PVOID)(Item + 1), DataItems, DataItemSize * DataItemsCount);
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/* store result */
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Irp->IoStatus.Status = STATUS_SUCCESS;
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Irp->IoStatus.Information = Size;
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/* done */
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return STATUS_SUCCESS;
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}
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@ -1140,20 +1140,6 @@ KsCancelRoutine(
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}
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}
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/*
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@unimplemented
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*/
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KSDDKAPI
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NTSTATUS
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NTAPI
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KsGetChildCreateParameter(
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IN PIRP Irp,
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OUT PVOID* CreateParameter)
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{
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UNIMPLEMENTED;
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return STATUS_UNSUCCESSFUL;
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}
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NTSTATUS
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FindMatchingCreateItem(
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PLIST_ENTRY ListHead,
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